Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Is it possible to have a client upload a file then have the file moved/copied to a CDN to be downloaded by others?
You need a plugin that uses the filter:uploadFile hook to do that.
filter:uploadFile
It doesn't look like any exist yet.
What CDN did you want to use?